Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Calc. vs exp. Bad Vib. HF vs MP2 Bad scale factors Low excited states Oddities NaCN Is not linear FAQ Help Units Choose Units Energy Bond length Rotational Constant Moment of Inertia Dipole and Quadrupole Polarizability Explanations Hartree cm-1 Debye Credits Just show me Show me a calculated geometry Summary Using older interface Limit Basis sets Method options List Recent molecules Choose a few Molecules Number of atoms By heavy atoms Diatomics InChI Deuterated Dimers Geometry Point group Point group count Bonds types Isodesmic reactions Bad point group Multiple conformers, states Vibrations Big anharmonicity Energy Enthalpy at 0 Kelvin Similar molecules Similar Isomers Cis/trans Tautomers Multiple conformers, states Ions, Dipoles, etc. List Ions Ionization changes point group Dipole Quadrupole Polarizability Proton Affinities Index of CCCBDB Feedback Error form Wants
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All data (experiment and calculated) in the CCCBDB for HCNO (fulminic acid)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K
	Enthalpy 0K
	Energy 0K		1095
	Energy 298.15K		506
	Atomization Enthalpy 298.15K		31
	Atomization Enthalpy 0K		31
	Entropy (298.15K)		3
	Entropy at any temperature		3
	Integrated Heat Capacity		3
	Heat Capacity (Cp)		3
	Nuclear Repulsion Energy		1074
	HOMO-LUMO Energies		936
	Barriers to Internal Rotation		820
Geometries	Cartesians		1056
	Internal Coordinates	x	1056	x
	Products of moments of inertia		1044
	Rotational Constants		1055
	Point Group		1079
Vibrations	Vibrational Frequencies	fun.	1050	x
	Vibrational Intensities		1442
	Zero-point energies	x	1050	x
	Vibrational scaling factors	x
	Anharmonic frequencies and constants
	Raman frequencies and intensities		421
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		643
	Dipole	x	851	x
	Quadrupole		722
	Polarizability		740
Other results	Spin		0
	Number of basis functions		49
	Conformations		2	x